pneumatic reversible drill 双向风钻
Air Reversible Drill 正反转气动钻
eumatic reversible drill 双向风钻
reversible drill reversible khaki 双面卡其
Reversible air drill 气动正反转气钻
reversible variable speed drill 可逆变速钻孔机
reversible close-quarter pneumatic drill 狭小地方用的风钻
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He said that's an easily reversible process once the weather passes: Purge the seawater out, pull the packer out and reinsert the drill string to begin drilling again.
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